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针对呈倒品字形分布的三个冷却塔,采用风洞试验方法进行风致干扰效应研究。通过增加模型表面粗糙度的方法来补偿模型试验的雷诺数,应用POD方法进行风压点的加密和插值,计算单塔和三塔的阻力系数、升力系数和底部剪力系数等,并分析三塔的干扰系数随塔间距、风向角的变化规律。研究表明,三塔情况下,顺风向底部剪力平均值和极大值的干扰系数大部分都小于1,说明呈倒品字形分布的三塔对风通道形成阻挡,使后塔受到的总体阻力变小。横风向底部剪力极大值的干扰系数大部分超过1,最大值接近2,说明三塔情况下横风向的脉动效应非常显著。
Aiming at the three cooling towers with inverted glyph distribution, the wind tunnel test method is used to study the wind disturbance effect. The Reynolds number of the model test was compensated by increasing the surface roughness of the model. The POD method was used to encrypt and interpolate the pressure points. The drag coefficient, lift coefficient and bottom shear coefficient of the single tower and the three towers were calculated. Tower interference coefficient with tower spacing, wind direction of the law of change. The results show that in the case of three towers, the interference coefficients of mean and maximum shear velocities in the downwind are mostly less than 1, which indicates that the three towers in the shape of inverted glyphs block the wind tunnel and the overall resistance to the back tower Smaller Most of the interference coefficients of the maximum value of the shear force at the bottom of the transverse wind exceed 1 and the maximum value approaches 2, indicating that the pulsation effect of the transverse wind direction in the three towers is very significant.